Outward-Opening Round Manway with Central Sight Glass and Post Clamps

Domed Cover with Knob-Locked Central Sight Glass

The assembly features an outward-opening domed circular lid fitted with a rear hinge, a welded tubular grab handle on the dome flank, and a raised central circular viewing port. Unlike multi-bolt flange windows, the viewing port bezel is retained by three vertical thumb knobs around its upper ring.

Perimeter C-Post Disc Clamps

Around the main cover flange, C-shaped bracket posts wrap over the rim so vertical clamping screws with flat circular metal disc knobs bear directly onto the upper flange edge. Three perimeter post clamps are visible in the product photograph, while the generic series schedule lists 4–6 handles across the wider series.

Listed Dimensions and Materials

The specification schedule lists SS304 or SS316L construction in nominal sizes from 8" to 24" (200–600 mm), with a 100 mm collar height, a 3 mm wall thickness, and an internal finish of Ra ≤ 0.8 µm. Listed gasket elastomers include silicone, EPDM (-10 °C to +120 °C), FKM/Viton, and NBR.

Configuration and Order Checks

Because the series schedule reuses a general series template while the photograph depicts all-metal C-post disc knobs and a three-knob sight glass, confirm the exact post clamp count, viewing port diameter, lens material, and collar dimensions for your vessel cutout before ordering.